What’s Vulnerable › Vulnerabilities

CVE-2024-47187: Suricata datasets: missing hashtable random seed leads to potential DoS

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-16 · updated 2026-06-17
• Weakness: CWE-330

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, missing initialization of the random seed for "thash" leads to datasets having predictable hash table behavior. This can lead to dataset file loading to use excessive time to load, as well as runtime performance issues during traffic handling. This issue has been addressed in 7.0.7. As a workaround, avoid loading datasets from untrusted sources. Avoid dataset rules that track traffic in rules.

Affected products

• OISF suricata: before 7.0.7 — fixed in 7.0.7

How to fix

Upgrade to a fixed version: OISF suricata 7.0.7. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/security/advisories/GHSA-64ww-4f6x-863p
• https://redmine.openinfosecfoundation.org/issues/7209

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